Improvement in miners  lamps



To all. whomit may concern:

Be it known that I, WILLIAM C. WINEIELD,

WILLTAM O. WINEIELD,`OE.HUBBAED, OHIO.

IMPROVEMENT IN MINERS' LAMPS.

Specication forming part of Letters Patent No. 115,143, dated May 23,1671.

of Hubbard, in the county of Trumbull and State ot' Ohio, have inventeda new and useful article oi' manufacture called Miners Lamp;

and I dow hereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawing andto the letters Ot refer-en ce marked thereon.

The nature of my new article of manufacture consists `in securing thecap of the ordinary miners lamp 7 to its body through the mediumofscrew-threads in the cap and on the neck of lamp.

To enable others skilled in4 the art to make and use my new article ofmanufacture, I will proceed to describe its construction.

Figure l represents my new article of manufacture, viz., a miners lamp.Fig. 2 represents the cap of the lamp. Fig. 3 represents a verticalsection of the body of the lamp.

The body A is constructedin theusual manner, but its :neck B is providedwith screw threads G, which are fitted to screw-threads e inthe cap D.By this arrangementof screwthreads in the cap D and the neck B of thebody A the lamp can be filled with oil and then closed, through themedium of cap D, so as to prevent all leakage of oil, which is a veryvaluable considerationA in a miners lamp.

Having thus described the nature, con struction, and operation of myimprovement, what I claim as of my invention is- A new article ofmanufacture, viz., a miners lamp, provided with a screw-cap, D,constructed, arranged, and operating with relation to the body of thelamp as herein described, and for the-purpose set forth. Y

WILLIAM G. VIN FIELD.

Witnesses EBENEZER JACKSON, STEPHEN CUsHMAN.

